cts6_score: Carpal Tunnel Syndrome 6 (CTS-6)

In cliot: Clinical Indices and Outcomes Tools

Carpal Tunnel Syndrome 6 (CTS-6)

Description

Calculates the CTS-6 score, a validated clinical diagnostic tool for Carpal Tunnel Syndrome. The score assigns weighted points to six history and physical examination findings to estimate the probability of CTS. A score of 12 or higher indicates a high probability of CTS.

Usage

cts6_score(numbness_median_territory, nocturnal_numbness,
           thenar_atrophy_weakness, phalens_test, tinels_sign,
           two_point_discrim_gt_5mm)

Arguments

numbness_median_territory	Numeric (0 or 1). Numbness primarily in the median nerve distribution (thumb, index, middle, radial half of ring finger). (1 = Yes, +3.5 points).
nocturnal_numbness	Numeric (0 or 1). Numbness waking the patient at night. (1 = Yes, +4.0 points).
thenar_atrophy_weakness	Numeric (0 or 1). Observation of thenar atrophy or weakness of thumb abduction. (1 = Yes, +5.0 points).
phalens_test	Numeric (0 or 1). Positive Phalen's test (numbness/tingling within 60 seconds of wrist flexion). (1 = Yes, +5.0 points).
tinels_sign	Numeric (0 or 1). Positive Tinel's sign (tingling/shock sensation on tapping median nerve). (1 = Yes, +4.0 points).
two_point_discrim_gt_5mm	Numeric (0 or 1). Two-point discrimination > 5 mm in the median nerve distribution. (1 = Yes, +4.5 points).

Value

A list containing:

CTS6_Score	The calculated total score (Range 0-26).
Probability_Category	Estimated probability of CTS (Low <5, Intermediate 5-12, High >12).

References

Atroshi I, Lyren PE, Gummesson C. The 6-item CTS symptoms scale: a brief outcomes measure for carpal tunnel syndrome. J Hand Surg Am. 2009;34(2):196-204. Graham B. The value added by electrodiagnostic testing in the diagnosis of carpal tunnel syndrome. J Bone Joint Surg Am. 2008;90(12):2587-2593.

Examples

# Example 1: High Probability
# Numbness median (+3.5), Nocturnal (+4), Phalen's (+5)
# Score = 12.5
cts6_score(1, 1, 0, 1, 0, 0)

# Example 2: Low Probability
# Only Tinel's sign present
# Score = 4.0
cts6_score(0, 0, 0, 0, 1, 0)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.